Watts AERCO EXT Installation, Operation & Maintenance Manual page 66

Ufly Controller and BCM for Modulex EXT
CHAPTER 7: BCM MODBUS AND ADDRESS ASSIGNMENTS
Table 7-4: BCM Standard Holding Register Address Mapping
Modbus Data
Menu Item
Address
CH maximum target
9101
temperature.
CH: enable the
9102 parallel operation
DHW minimum
9200
target temperature
DHW maximum
9201
target temperature
DHW request: tank
9202
temperature
differential.
DHW request: tank
9203
temperature
hysteresis.
DHW: tank
9204 temperature
regulation gain
DHW: Boiler request
9206 maximum
temperature
9211 DHW Pump Off Delay
Maximum
modulation level that
9212 enables the CH and
DHW parallel
operation
Maximum regulation
error that disables
9213
the CH and DHW
parallel operation
Pump Modulation
3007 Output @ Minimum
Burner Level
OMM-0159_A • 6/28/2022
Units and Range
(20°C to 100°C)
0 = Parallel Operation is
CH/DHW 1 = Parallel operation is
(25°C to 45°C)
122°F to 149°F
(50°C to 65°C)
to target
(-20°C to 20°C)
to target
122°F to 212°F
(50°C to 100°C)
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
68°F to 212°F
0/1:
disabled.
enabled.
77°F to 113°F
-36°F to 36°F
2°F to 36°F
(1°C to 20°C)
0-15
5 - 600 sec
0-100%
0-54°F
0 – 10V
(Value x 10)
Default/(Comments)
(Read/Write)
185°F
(Read/Write)
0
(Read/Write)
95°F
(Read/Write)
149°F
(Read/Write)
7°F
(Read/Write)
14°F
(Read/Write)
0
(Read/Write)
167°F
(Read/Write)
60 sec.
(Read/Write)
0%
(Read/Write)
9°F
(Read/Write)
3V
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